Dry toilets let microbes do the job of turning night soil into soil.
After each use, sawdust or cocopeat is used to cover the night soil.
The only disadvantage is some space is needed to store the compost for one year.
Old toilets were dry and there was an occupation called night soil man.
However during that time, sawdust or cocopeat was not used to cover the night soil in the toilet after each use.

Good points about compost toilet:

Clean drinking water from the tap is not polluted.

Save water.

Sewage treatment plants do not need to be built.

There is no impact from sewage system failures.

Reduce household wastes that need to be carried away by municipal council.
Biodegradable household wastes such as paper can also be composted together.

The compost can make the land fertile.
People still use human waste for agriculture and it is nothing strange.
Note that the compost needs to age for at least one year before it is used for agriculture.

People are trained to be more civic conscious, in which everyone takes care of his or her own waste.

It is less smellier than a flush toilet because the night soil drops onto sawdust or coco peat instead of ceramic and water surface.
Sawdust and coco peat can absorb the smell.
Also in flush toilet, the night soil may disperse upon contact with water, so more odour is released.

There will be no animals emerging from the toilet like flush toilet.
It is not unusual for a snake or a rat to appear in a flush toilet.